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Chapter 9 cards Flashcards

Science (18 cards)

1
Q

a body plan in which an organism can be divided into two parts that are nearly mirror images of each other.

A

bilateral symmetry

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2
Q

body plan in which organism can be divided into two parts that are nearly mirror images of each other anywhere through its central axis.

A

radial symmetry

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3
Q

a body plan in which an organism cannot be divided into any two parts that are nearly mirror images.

A

asymmetry

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4
Q

an inherited trait that increases an organism’s chance of surviving and reproducing in a particular environment.

A

adaptation

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5
Q

a fluid-filled internal cavity surrounded by muscle tissue.

A

hydrostatic skeleton

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6
Q

a thick,hard outer covering ;protects and supports an animal’s body.

A

exoskeleton

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7
Q

the internal rigid framework that supports humans and other animals.

A

endoskeleton

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8
Q

an animal that survives by living inside or on another organism,gets food from the organism,and does not help in the organism’s survival.

A

parasite

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9
Q

a thin layer of tissue that covers a mollusk’s internal organs.

A

mantle

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10
Q

a process in which an outer covering,such an an exoskeleton, is shed and replaced.

A

molting

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11
Q

a develop mental process in which the body form of an animal changes as it grows from an egg to an adult.

A

metamorphosis

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12
Q

a flexible,rod-shaped structure that supports the body of a developing chordate.

A

notochord

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13
Q

grooves along the side of a developing chordate .

A

pharyngeal pouch

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14
Q

an organ that exchanges carbon dioxide for oxygen in the water.

A

gill

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15
Q

a protective membrane that surrounds an embryo.

A

amnion

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16
Q

an animal that heats its body from heat in its environment.

17
Q

an animal that generates its body heat from the inside.

18
Q

special tissue that produces milk for young mammals.

A

mammary gland